Feature: Native Token Transfers (NTT) integration (#1674)

* Feature: Native Token Transfers (NTT) integration

Addresses #1585

* Use SDKv2 layouts for message parsing

* renamed platforms -> chains

* added sepolia cctp, removed goerli cctp

* reworked ntt config, added ntt groups

* usdc switch chains fix

* custom ntt group support

* abi version support, added 0.1.0 abis

* Updated testnet addresses

* updated testnet USDC.e address

* rebased development

* updated 0.1.0 ABI, avax-celo addresses

* delivery price wormhole fee for manual xfers fix

* removed comment

* removed old testnet ntt token configs

* Added NTT to README

* Added Fantom bridged USDC NTT addresses

Author: kev1n-peters

README.md

@@ -131,6 +131,21 @@ See the "Arbitrary Token" example in [the config docs](https://docs.wormhole.com
 
 Please note you have to [register a token](https://portalbridge.com/advanced-tools/#/register) with the token bridge before you can use it in Connect.
 
+### Configuring Custom NTT (Native Token Transfer) Groups
+To configure custom NTT groups, include an `nttGroups` key in your configuration.
+
+```ts
+const config: WormholeConnectConfig = {
+  nttGroups: {
+    // Your custom NTT groups go here
+  }
+}
+```
+
+For a practical example of how to structure your custom NTT groups, refer to the [nttGroups.ts](https://github.com/wormhole-foundation/wormhole-connect/blob/development/wormhole-connect/src/config/testnet/nttGroups.ts) file.
+
+Please note that the `tokenKey` specified in your custom NTT group must correspond to an existing entry in the tokensConfig, whether it's a built-in or a custom token.
+
 ### Custom Theme
 
 You can also customize Connect's color scheme by providing a `WormholeConnectTheme` as the `theme` prop.

builder/src/consts.ts

@@ -253,6 +253,20 @@ export const ROUTE_INFOS: RouteInfo[] = [
     title: "wstETH Bridge",
     description: "Permissionlessly transfer wstETH cross-chain with Wormhole.",
   },
+  {
+    key: "nttManual",
+    title: "Native Token Transfer",
+    description:
+      "Permissionlessly transfer native tokens cross-chain with Wormhole.",
+    link: "https://github.com/wormhole-foundation/example-native-token-transfers/blob/main/README.md",
+  },
+  {
+    key: "nttRelay",
+    title: "Native Token Transfer Automatic Redeems",
+    description:
+      "Automatic redeems for Native Token Transfers powered by xLabs.",
+    link: "https://github.com/wormhole-foundation/example-native-token-transfers/blob/main/README.md",
+  },
 ];
 export const ROUTES = ROUTE_INFOS.map((r) => r.key);